I don't understand your view of how Blanche's rape, In which you stated, "Blanche's most visceral experiences are illusions and repressed memories that torment her, so that her rape seems an almost inevitable consequence of her psychological pain." How exactly, in anyway, is Blanche's rape inevitable? Did she appeal weak stimulating Stanley's carnal desire to conquer Blanche's threatening, bourgeoisie personality?

Wait, wait. Mitch -doesn't rape someone- and that makes him a gentleman? C'mon. That's a pretty low bar for "gentleman" isn't it? That word has a specific meaning and it is for sure not "doesn't commit a horrible, violent crime even though he wants to."

I think the wording you're looking for there is something other than "fundamental gentlemanliness." There is a whole lot of daylight between simply not being a violent criminal and being a gentleman.